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Finding the Fourth Proportional to 120,064.62, 165,702 and 69,079.58

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Solution

The fourth proportional to 120,064.62, 165,702 and 69,079.58 is: 95,337.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,064.62 : 165,702 = 69,079.58 : x
  2. Step 2: Convert to fraction form
    120,064.62/165,702 = 69,079.58/x
  3. Step 3: Cross multiply
    120,064.62x = 165,702 × 69,079.58
  4. Step 4: Simplify right side
    120,064.62x = 11,446,624,565.16
  5. Step 5: Solve for x
    x = 11,446,624,565.16/120,064.62
  6. Step 6: Final answer
    x = 95,337.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.